— 9— 



of cells, persistent. Spores yellow, papillose, seldom round. 

 Plants 15111111. in height. Among stones in the sand by the sea 

 shore, Baker Islanrl near Mt. Desert, Maine. — E. L. Rand. 

 Nearest to P. littoralis Mitt. 



Corrections. 



In the last number the printer unfortunately transposed the 

 figures 2 and 3 at the end of the first and second lines of the key 

 to Mnium. In section 3 of the key the printer also interchanged 

 the figures 4 and 7 in the first two lines of the section. In the 

 first line of section 13 of the key read 0.018 for 0.18. The distinc- 

 tions between M. spinulosum and M. marginatum are insufticient, 

 as a \-ery large proportion of the s[)eciniens of M. spinulosu))i ha\e 

 the capsules solitary. 



The following additicjnal characters are gi\en 1)\' l.impricht 

 in his " Laubnioose": 



I.ea\es rris[)e(l when dr\', ujiper lea\es not in a n^sette . 



' . . . . M. mariinuitum . 



l.eaxes not crisped when <ir>', uijjier lea\es in a rosette . 



M. spinulosum. 



The differences are relatixe, but well marked. M. spiini/asum 

 is much more likelv to be found. 



Notice to Moss Students. 



Mr. John M. llolzinger of Winona, Minnesota, is compilini; a 

 paper about li\ing moss students and asks all such to exchange 

 photographs with him, each photograph to bear on the back the 

 autograph, address, and \'ear of liirth of the sender. \\"c ipujte 

 from his open letter in the Asa Gray Bullelin, the following (piestions 

 wiiich he would like each moss student to answer: 



1. ^'our \ocation. 2. The time \i)u are able to gi\c aniuialK' 

 to the stu(l\' of mosses. 3. .A list of your br\-ological papers or 

 larger works; also a list of exsiccati \()U ha\e distributed. 4. 

 Which genera or larger groups of mosses interest \'ou es])eciall\? 

 5. .Are \()U willing to have referred to you, for critical examination, 

 species that fall in tht- line of \(jur special interest? 6. Do you 

 exchange mc)sses? If so, what material do you offer? 



If for any reason a photograph cannot be sent, he will be \ er\' 

 glad to get at least a brief statement to each of the abox'e six (pies- 

 tions from anjone from whom he has so far not heard. 



